Susceptibility of melanized and nonmelanized Cryptococcus neoformans to nitrogen- and oxygen-derived oxidants

Infect Immun. 1994 Jul;62(7):3004-7. doi: 10.1128/iai.62.7.3004-3007.1994.

Abstract

Melanized Cryptococcus neoformans cells were less susceptible than nonmelanized cells to the fungicidal effects of nitrogen- and oxygen-derived oxidants. The results support the hypothesis that the phenoloxidase enzyme system contributes to virulence by protecting C. neoformans against nitrogen- and oxygen-derived oxidative antimicrobial molecules produced by immune effector cells.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Antifungal Agents / pharmacology*
  • Cryptococcus neoformans / drug effects*
  • Cryptococcus neoformans / immunology
  • Cryptococcus neoformans / pathogenicity
  • Free Radicals
  • Melanins*
  • Nitric Oxide / pharmacology*
  • Oxidation-Reduction

Substances

  • Antifungal Agents
  • Free Radicals
  • Melanins
  • Nitric Oxide